Fig. 1. Incidence estimator’s curves for family and genera. a) ICE, b) Chao2, 3) Jack1 and d) Jack2. X axis is re-scaled to percentage of sampling effort: 100%=the maximum value of the larger sample (Ephemeroptera). Y axis is rescaled to the percentage of richness estimated: 100%=final value of richness in each order (fill line).